子集和问题.rar:这是我学算法设计时的总结,包括定长和不定长做法(也就是回朔法,剪枝限界),当然也包括穷举法.-subset and problems. Rar : This is my learning algorithm design at the conclusion, including fixed-length and variable length approach (that is, back to Schomburg, pruning Bound), which of cour